Improvement in machines for bending and channeling horseshoes



's sheets--she'et 1..

Patented oct. i7 1871.

EErcE.

PATENT ADOLF OEHME, OF ROOK ISLAND, ILLINOIS.

IMPROVEMENT IN MACHINES FOR BENDING AND CHANNELING HORSESHOES.

Specification forming part of Letters Patent No. 120,087, dated October17, 1871.

To all whom it may concern:

Be it known that I, ADoLF OEHME, of Rock Island, in the county of RockIsland and State of Illinois, have invented a new and Improved Machinefor Forming and Channeling Horseshoes; and I do hereby declare thefollowing to be a full, clear, and exact description thereof, which willenable those skilled in the art to make and use the same, referencebeing had to the accompanying drawing forming part of thisspecification, in which drawing- Figure l represents a front view of myimproved machine. Fig. 2 is a plan or top view thereof. Fig. 3 is alongitudinal vertical section of the same, the line m a', Fig. 2,indicating the plane of section. Fig. 4 is a transverse section of thesame in the plane indicated by the line y y, Fig. 2. Fig. 5 is a similarsection taken in the plane indicated by the line z z, Fig. 2. Figs. 6 tol5, inclusive, are details which wllbe referred to as the descriptionprogresses.

Similar letters indicate corresponding parts.

This invention relates to a machine for bending iron into the form ofhorseshoes, or into chainlinks, or other articles 4of a similar shape;and and also for channeling the horseshoes after the iron has been bent,though I will here remark that by channeling the bars of iron previousto introducing them into the bending-machine, that part of the mechanismwhich serves for channeling the horseshoes may be omitted. Myimprovements consist, principally, in a pendulum lever, carrying aroller, which is pressed up bythe action of a cam against the metal bar,so as to bend the same over the forming-de. The forming-die is secured'on a shaft which stops automatically after it has completed onerevolution, to give time for the removal of the iinished horseshoe, andfor the introduction of a fresh blank. The blanks are clamped on theforming-die by a toggle mechanism. The roller-die used in my machine forchanneling the horseshoes has a compound motion, whereby the same isallowed to follow the eccentricity of the horseshoe, to place itself ina tangential position toward the curve of the channel, and to be forcedin against the face of the horseshoe to the required depth. The shaftwhich carries the horseshoe to be channeled stops automatically aftereach revolution.

In the drawing, A designates a frame which forms the bearings for theworking parts of my machine, the side pieces of said frame being firmlyconnected by traverses C. D is the main shaft, on which are mounted afast and loose pulley, (see Figs. 2 and 5,) and also a iiy-wheel closeto the outside of the frame A; and within the frame is mounted on saidmain shaft the cog-- wheel a, which gears into a cog-wheel, b, mountedloosely on the shaft E, and serves to impart motion to the same in thedirection of the arrow shown near it in Figs. l and 2. Close to the cog`wheel b is another cog-wheel, e, also placed loosely on the shaft E, andthis cog-wheel is provided with four arms, two of which are perforatedwith holes parallel to the shaft, and on opposite sides thereof, (seeFig. 6,) said holes being intended to receive keys or projections ysecured to a sleeve or clutch, d, which slides on the shaft E in thedirection of its length, being compelled to revolve with the same by afeather key, (see Fig. 4.) If the clutch d is moved up toward the wheelc, the projections y pass through the holes in the arms of said wheeland catch against studs d* projecting from the inner surface of thecogwheel b, and as this cog-wheel revolves its motion is transmitted tothe cog-wheel c, to the clutch d, and through this to the shaft E. Thehub of said clutch is provided with an annular groove, into whichproject two pins secured in the inner circumference of the strap F. Thisstrap embraces a pin, f it, situated below the shaft E, (see Fig. 4,) sothat it (the strap) can be moved toward and from the cog-wheel e, andthe clutch d is subjected to the action of a spring, dit, which has atendency to force the same in toward the cog-wheel e. From the upperpart of the strap F rises a pin, Et, which forms the fulcrum of a lever,j', and in the front end of this lever is mounted a friction-roller, g,which bears on a cam, h, projecting om the cog-wheel e, (see figs. 2 and4,) so that by this cam the strap, together with the clutch d, areforced back against the action of the spring dit, and the projections yof the clutch do not engage with the cog-wheel e until the roller g isthrown off from the cam h. The arbor of the roller g projects throughone end of arod, t', the opposite end of which is pivoted to a lever, k,which is mounted on the top end of a vertical rock-shaft l, (see Fig.3.) The lever 7c extends beyond the rock-shaft l, and its rear endconnects by a link, m, with lever f, the connection between these twoparts being effected by a slot, which straddles a pinprojectin g fromthe lever f, so that by the said slot the motion of the lever j' isconfined within certain limits. To the rear end of the lever k issecured a spring, kt, which has a tendency to keep said lever, togetherwith the roller g, in the position shown in Fig. 2, the leverf beingprevented, by the slot in the link m, from turning back beyond thedesired point. 0n thc lower part of the rock-shaft lis mounted a lever,n, which connects with a rod, U, that extends through the front of theframe A, and carries on its end a cushion, xt, so that, by pressingagainst this cushion the rod Uis forced in, the rock-shaft lis turned inthe direction of the arrow marked near it in Fig. 2, and the roller g isforced oif from the cam h. When this is done, the clutch d is forced intoward the cog-wheel c, the projections 3/ of the clutch are driventhrough the holes in the cog-wheel e, and, as the cog-wheel b revolves,the studs dit, projecting from the side of the same, come in contactwith the projections y, thereby imparting motion to the cog-wheel e andto the clutch d, and by the action of the clutch the motion istransmitted to the shaft E. When this shaft, together with the cog-wheele, has completed one revolution, the cam h strikes the roller g, (thecushion having been released as soon as the motion of the shaft Ecommences,) and the clutchd is returned to its original posit-ion,throwing the projections y out of contact with the studs dit, and themotion of the shaft E stops. The cog-wheel e gears in a similarcog-wheel mounted on the shaft G, on the end of which is mounted the camH. This cam is composed of two disks, (see Fig. 2,) which act on tworollers, r1 r2, mounted in a pendulum, I, (see Figs. 13 and 14,) that issuspended from a pivot, p, securedto the main frame A. The rollers r1 r2turn loosely on a pin, q, which has its bearings in the lower end of thependulum I, (see Fig. 13) and on which is also mounted the steel disk s,that is situated between the rollers r1 r2, and projects between the twoparts of the cam H, as shown in Figs. 2, 13, and 14. Said steel disk sacts against the formingdie u, which is mounted on the shaft E, betweentwo jaws, t c, as shown in Fig. 2, being' firmly attached to the surfaceof the jaw t, which is rigidly secured to the shaft E. The jaw v ismounted loosely on the shaft E, and it connects, by means of atoggle-mechanism, K, with a bracket, at, which slides on the shaft E,and abuts against a nut, 121, screwed on the end of said shaft. Thetoggle mechanism K is operated by a lever, fw, which may be operated byhand, or which may be so arranged that it is operated automatically bythe machine at the proper intervals. The toggle mechanism consists oftwo pairs of toggle-arms, c2, (see Fig. 11,) each pair being hingedtogether by pivots, c3, and connected to the jaw v by pivots t4, and tothe bracket c* by pivots c5. The lever w is bifurcated and it straddlesthe toggle-arms, being connected to the fulcrum-pins c3 of saidtoggle-arms, above and below, by links c6. These links are fastened tothe inner end of the lever by pivots fv situated at a certain distanceapart, (see Figs. l, 2, and 11,)

so that by swinging the lever out to the position indicated by dottedlines in Fig. l1, the pivots t7 are brought to the points v8 and therebythe toggle-arms are straightened and the jaw u is forced up toward thejaw t. The iron bar which is to be formed into a horseshoe is heated toa white heat and then introduced between the jaws t and c, beingsupported by the pin L and'by a shoulder on the forming-die a, as shownlin Fig. 12 5 then the lever w is swung out so as to clamp the ironbetween the jaws t and c, the distance .to which the jaw t closesup,'being regulated by the nut c1 to correspond to the thickness of theiron bar. As soon as the bar has been thus adjusted between the jaws tc, the workman, by pressing with his knee against the cushion mit,pushes in the rod U, Fig. 2, the roller g is thrown out of contact withthe cam h and the shafts E and G are started. By the action of the cam Hand disk s the bar of iron is bent around the forming-die u, and whenthe shafts E and G have completed one revolution, their motion stops,the lever w is turned back to its original position and thereby thecompleted horseshoe is released so that it can be taken off from the dieu. It will be readily understood, that by changing the form of the cam Hand that of the forming-die u, horseshoes of different shape or size canbe formed by my machine. After removing the horseshoe from theforming-die u, I immediately expose the sameto the action of themechanism for channeling the same, which I will now proceed to describe.On the main shaft D, Figs. 1, 2, and 3, is mounted loosely a cog-wheel,a', the hub of which is provided with two recesses to admit the keys@10, which, when not retained by the cam c and fork all, are forced upagainst said hub by the action of a spiral spring wound around the shaftD. The keys @lo are secured in a sleeve or clutch, M, which is fitted onthe shaft D with a feather-key, and which is provided with a circulargroove to admit the fork d1. This fork branches off from a slide, d",which is provided with a second fork, d2, branching off in a directionopposite to the fork d1 and embracing the shaft O, (see Fig. 2,) whilethe front end of said slide rests in a slot in the main frame. Throughthe bifurcated inner end of the slide di extends a pin, e, which formsthe fulcrum of an elbow-lever, el, one arm of which carries thefriction-rollerj", while its other vertical arm is pivoted to thestarting-bar g which extends to the front side of the main frame overthe slide d0. (See Figs. 2 and 5.) A suitable stop prevents the arm ofthe elbow-lever e', which carries the friction-roller j", from sinkingdown below a horizontal position. The friction roller1 f bears against acam, c', secured to a disk, hf, which is mounted on the shaft O. Thecog-wheel a of` the main shaft D engages with cog-wheel b mounted on theshaft 0, and on this shaft is also mounted an eccentric, if, which maybe secured to the diskh. If the shaft O revolves, the eccentric t actsupon a roller, l', secured in the bifurcated end of a lever, 7c', whichis mounted on a rock-shaft, l?, that has its bearings in the side piecesof the main frame A and extends through the front of said frame, bearingon its end an arm, m', to which is secured a lever, nl, by means of apivot, no, and a screw, n10. This screw passes through a slot in thelever, (see Fig. 1,) so that said lever can be turned on its pivot andadjusted in the desired position. From the end of the lever nl issuspended a link, o', the bottom end of which is pivoted to the forkedend of a rod, p', that carries on its opposite end the sharp-edgedrollerdie ro. The rod p is supported by an eye, q', being prevented fromsliding through the same by two collars, one on each side of said eye.From this eye extends a pivot, ru, through a hole in the slide T13,which moves in guides s1 secured to the main frame. To the end of saidslide are secured two rollers, (see Fig. 7,) which engage withcam-grooves in the inner surfaces of the disks Q which are mounted onthe shaft O outside the main frame, as shown in Figs. l and 2. When theshaft O revolves, therefore, the cam Q imparts to the slide rwareciprocating motion, which motion is transmitted to the rod p by meansof the pivot and eye q. 0n the shaft O is mounted a cam, R, which actson a roller, s3, secured in the end of a lever, t', which has itsfulcrum on a pivot, u1, secured in a bracket attached to one of thetraverses of the main frame. (See Fig. 2.) Said lever connects with arod, u2, (see Fig. 2,) which extends through the front piece of the mainframe and is attached to a pendent lever, w', (see Figs. l and 15,)which is suspended from the end of one of the traverses of the mainframe so that it can fully swing in and ont. To this pendent lever issecured a fork, y', which embraces the rod p and forms the connectionbetween it and the pendent lever zr, thereby compelling said rod tofollow the motions imparted to the lever w by the action of the cam R onthe lever t. The horseshoe, as the saine is removed from the forming-dieu of the bending' mechanism, is placed on a die, z, which is secured tothe side of the cam Q, and it is clamped fast between said cam and ajaw, X, which slides on the end of the shaft O and to which motion isimparted by a hand-lever and toggle mechanism, as shown in Fig. 2 of thedrawing. By pulling the rod g out, the frictionroller f is lifted offfrom the cam c', the clutch M is thereby released and caused to engagewith the cog-wheel af, and motion is imparted to the shaft O. The cam z"imparts to the shaft P a rocking motion, which, being transmitted to therod p', keeps the roller-die ro in the required tan gential position inregard to the horseshoe clamped on the die z. In order to illustrate thenecessity of this motion of the roller-die I have shown the same in twodifferent positions in Figs. 9 and 10. At the same time atraversingmotion is imparted to the roller-die toward and from the shaft 0 by theaction of the cam Q on the slide r1, causing the same to follow theeccentricity of the horseshoe, and, finally, said rollerdie is pressedin against the horseshoe, at the proper places, by the action of the camR on the lever t, rod a2, and pendent-lever fw. When the shaft 0 hascompleted one revolution, the clutch M is forced back by the action ofthe cam t on the roller j" and the channeled horseshoe is taken offfromthe die a', and, after a fresh blank has been introduced, the operationis repeated. If the iron bars used for forming the horseshoes arealready provided with channels, the operation of channeling, as abovedescribed, can be dispensed with.

What I claim as new, Letters Patent, is-

l. The pendulum I, carrying the rollers r1 r2 and a disk, s, incombination with a cam, H, acting on the rollers r1 r2, and with theforming-die, all constructed and operating substantially in the mannerherein shown and described.

2. The cam h acting on a roller, g, in the lever j', which connects, byrods m z', with a lever mounted on a rock-shaft, Z, to which motion isand desire to secure by imparted by the starting-bar U, in combinationwith the shaft E carrying the formingdie u and with the cog-wheels whichimpart motion to the shafts E and G, substantially in the manner and forthe purpose herein set forth.

3. The toggle mechanism K, constructed substantially as shown, incombination with the jaws n t and the forming-die u mounted on the shaftE, as specified.

4. The rollercreasing die ro, mounted on a rod, p, in combination withthe mechanism for reciprocating said rod longitudinally to bring thecreasers to and from the shoe, and mechanism to draw the creasers downupon the shoe, as and for the purpose set forth.

ADOLF OEHME.

Witnesses:

W. H. Gnsr,

